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/*
* Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "testing/gtest/include/gtest/gtest.h"
#include "webrtc/common_types.h"
#include "webrtc/modules/audio_coding/codecs/opus/interface/audio_encoder_opus.h"
namespace webrtc {
namespace acm2 {
#ifdef WEBRTC_CODEC_OPUS
namespace {
const CodecInst kDefaultOpusCodecInst = {105, "opus", 48000, 960, 1, 32000};
} // namespace
class AudioEncoderMutableOpusTest : public ::testing::Test {
protected:
AudioEncoderMutableOpusTest() : codec_inst_(kDefaultOpusCodecInst) {}
void CreateCodec(int num_channels) {
codec_inst_.channels = num_channels;
encoder_.reset(new AudioEncoderMutableOpus(codec_inst_));
auto expected_app =
num_channels == 1 ? AudioEncoderOpus::kVoip : AudioEncoderOpus::kAudio;
EXPECT_EQ(expected_app, encoder_->application());
}
CodecInst codec_inst_;
rtc::scoped_ptr<AudioEncoderMutableOpus> encoder_;
};
TEST_F(AudioEncoderMutableOpusTest, DefaultApplicationModeMono) {
CreateCodec(1);
}
TEST_F(AudioEncoderMutableOpusTest, DefaultApplicationModeStereo) {
CreateCodec(2);
}
TEST_F(AudioEncoderMutableOpusTest, ChangeApplicationMode) {
CreateCodec(2);
EXPECT_TRUE(
encoder_->SetApplication(AudioEncoderMutable::kApplicationSpeech, false));
EXPECT_EQ(AudioEncoderOpus::kVoip, encoder_->application());
}
TEST_F(AudioEncoderMutableOpusTest, ResetWontChangeApplicationMode) {
CreateCodec(2);
// Trigger a reset.
encoder_->Reset();
// Verify that the mode is still kAudio.
EXPECT_EQ(AudioEncoderOpus::kAudio, encoder_->application());
// Now change to kVoip.
EXPECT_TRUE(
encoder_->SetApplication(AudioEncoderMutable::kApplicationSpeech, false));
EXPECT_EQ(AudioEncoderOpus::kVoip, encoder_->application());
// Trigger a reset again.
encoder_->Reset();
// Verify that the mode is still kVoip.
EXPECT_EQ(AudioEncoderOpus::kVoip, encoder_->application());
}
TEST_F(AudioEncoderMutableOpusTest, ToggleDtx) {
CreateCodec(2);
// DTX is not allowed in audio mode, if mode forcing flag is false.
EXPECT_FALSE(encoder_->SetDtx(true, false));
EXPECT_EQ(AudioEncoderOpus::kAudio, encoder_->application());
// DTX will be on, if mode forcing flag is true. Then application mode is
// switched to kVoip.
EXPECT_TRUE(encoder_->SetDtx(true, true));
EXPECT_EQ(AudioEncoderOpus::kVoip, encoder_->application());
// Audio mode is not allowed when DTX is on, and DTX forcing flag is false.
EXPECT_FALSE(
encoder_->SetApplication(AudioEncoderMutable::kApplicationAudio, false));
EXPECT_TRUE(encoder_->dtx_enabled());
// Audio mode will be set, if DTX forcing flag is true. Then DTX is switched
// off.
EXPECT_TRUE(
encoder_->SetApplication(AudioEncoderMutable::kApplicationAudio, true));
EXPECT_FALSE(encoder_->dtx_enabled());
// Now we set VOIP mode. The DTX forcing flag has no effect.
EXPECT_TRUE(
encoder_->SetApplication(AudioEncoderMutable::kApplicationSpeech, true));
EXPECT_FALSE(encoder_->dtx_enabled());
// In VOIP mode, we can enable DTX with mode forcing flag being false.
EXPECT_TRUE(encoder_->SetDtx(true, false));
// Turn off DTX.
EXPECT_TRUE(encoder_->SetDtx(false, false));
// When DTX is off, we can set Audio mode with DTX forcing flag being false.
EXPECT_TRUE(
encoder_->SetApplication(AudioEncoderMutable::kApplicationAudio, false));
}
#endif // WEBRTC_CODEC_OPUS
} // namespace acm2
} // namespace webrtc
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